Method for producing an oral pouched snuff product

ABSTRACT

The present disclosure relates to a method for producing an oral pouched snuff product comprising a filling material ( 29, 10 ) and a saliva-permeable pouch ( 43 ) enclosing the filling material ( 29, 10 ), the product ( 29, 10 ) having a moisture content of at most 20% by weight, in particular at most 10% by weight, based on total weight of the product ( 29, 10 ), the saliva-permeable pouch ( 43 ) having one or more seals ( 45, 46 ), and said filling material ( 29, 10 ) comprising at least 20% by weight, based on dry weight of the filling material ( 29, 10 ), of at least one ingredient having a melting temperature below 180° C., the method comprising ultrasonically welding and cutting an advancing web ( 32 ) of packaging material ( 7 ) to which the filling material ( 29, 10 ) has been supplied. The present disclosure also provides an oral pouched snuff product which is obtainable by this method.

TECHNICAL FIELD

The present disclosure relates to a method for producing an oral pouchedsnuff product comprising a filling material and a saliva-permeable pouchenclosing the filling material, said product having a moisture contentof at most 20% by weight based on total weight of the product, saidsaliva-permeable pouch having one or more seals, and said fillingmaterial comprising at least 20% by weight, based on dry weight of thefilling material, of at least one ingredient having a meltingtemperature below 180° C. The present disclosure also provides an oralpouched snuff product obtainable by this method.

BACKGROUND

Smokeless tobacco for oral use includes chewing tobacco, dry snuff andmoist (wet) snuff. Generally, dry snuff has a moisture content of lessthan 10 wt % and moist snuff has a moisture content of above 40 wt %.Semi-dry products having between 10% to 40 wt % moisture content arealso available.

Smokeless tobacco products for oral use are made from tobacco leaves,such as lamina and stem of the tobacco leaf. The material from roots andstalks are normally not utilized for production of smokeless tobaccocompositions for oral use.

There are two types of tobacco-containing moist snuff, the American typeand the Scandinavian type which is also called snus. American-type moistsnuff is commonly produced through a fermentation process.Scandinavian-type moist snuff is commonly produced by using aheat-treatment process (pasteurization) instead of fermentation. Theheat-treatment is carried out in order to degrade, destroy or denatureat least a portion of the microorganisms in the tobacco preparation.

Both the American-type and the Scandinavian-type of moist snuff for oraluse are available in loose form or portion-packed in a saliva-permeable,porous wrapper material forming a pouch. Pouched moist snuff, includingsnus, is typically used by the user by placing the pouch between theupper or lower gum and the lip or cheek and retaining it there for alimited period of time. The pouch material holds the tobacco in placewhile allowing saliva to pass into the interior of the pouched productand allowing flavors and nicotine to diffuse from the tobacco materialinto the user's mouth.

There are also oral pouched nicotine-containing non-tobacco snuffproducts and oral pouched nicotine-free non-tobacco snuff productsavailable which may be offered as alternatives to oral pouched smokelesstobacco products. These oral pouched non-tobacco snuff products aregenerally used in the same manner as the corresponding oral pouchedtobacco-containing snuff products and are herein therefore also referredto as oral pouched snuff products.

Examples of oral pouched nicotine-containing non-tobacco snuff productsand the manufacture thereof are provided in WO 2012/134380.

Examples of nicotine-free non-tobacco snuff products and the manufacturethereof are provided in WO 2007/126361 and WO 2008/133563.

Oral pouched snuff products, such as oral pouched tobacco-containingsnuff products and oral pouched non-tobacco snuff products, may beproduced by measuring portions of the filling material (snuffcomposition) and inserting the portions into a nonwoven tube.

U.S. Pat. No. 4,703,765 discloses a device for packaging precise amountsof finely divided tobacco, such as snuff tobacco or the like, in atubular packaging material into which snuff portions are injected via afill tube. Downstream from the tube, welding means are positioned fortransverse sealing of the packaging material, and also cutting means forsevering the packaging material in the area of the transverse seal tothus form discrete or individual portion packages.

EP 2428450 B1 relates to a snus dosing method, wherein a portion oftobacco is filled into a dosing chamber of a dosing device and thenblown out of the dosing chamber by means of blow-out air to which watervapor has been added.

Oral pouched snuff products, such as tobacco-containing snuff productsand non-tobacco snuff products, may alternatively be produced by placingportions of tobacco-containing or tobacco-free moist snuff compositionon a nonwoven web using a pouch packer machine in accordance with thedevice disclosed in U.S. Pat. No. 6,135,120. This device comprisesfeeding means for feeding the snuff composition into pockets formed in arotary portioning wheel for portioning the composition into portions, atleast one compression means for compressing the snuff portions, a unitfor advancing a packaging material, such as a nonwoven web, in synchronywith the compressed portions, at least one discharge means fordischarging the portions from the pockets to the packaging material, anda forming unit for forming individual portion packages (such as pouchedsmokeless tobacco products) from the discharged portions and thepackaging material. At the Intended point of discharge of the portionsof to the packaging material, said packaging material has the form of atape, the compression means being arranged to compress the portions in adirection which differs from the discharging and the feeding directions.The compression is preferably effected in a direction perpendicular tothe discharging and the feeding directions. The compression may beeffected in the axial direction of the portioning wheel whereas thefeeding and discharging may be effected in the radial direction of saidwheel. This technique is herein referred to as the “NYPS” technique.

The packaging material forming the pouch in oral pouched snuff productsis typically a dry-laid bonded nonwoven comprising viscose rayon fibres(i.e. regenerated cellulose) and an acrylic polymer that acts as binderin the nonwoven material and provides for heat-sealing of the pouchesduring manufacturing thereof. The viscose nonwoven normally used forpouched smokeless tobacco products is similar to the fabric used in teabags. Nonwovens are fabrics that are neither woven nor knitted. Methodsfor the manufacturing of nonwoven materials are commonly known in theart. Further information on nonwovens is found in “Handbook ofNonwovens” by S. Russel, published by Woodhead Publ. Ltd., 2007.

The packaging material forming the pouch of the oral pouched snuffproduct should during manufacturing of the pouch provide for sealing,upon storage of the pouch exhibit none or a low degree of discolorationand upon usage by a consumer preserve integrity and strength, allow fora desired release profile of nicotine and flavors and provide a pleasantmouth-feel.

The organoleptic properties, such as texture, aroma, taste, shape andappearance, of the pouched snuff product, such as an oral pouchedsmokeless tobacco product, are of high importance to the user. It isgenerally desirable to provide oral pouched snuff products with rapidrelease of flavor and/or nicotine to provide an initial strong flavorexperience and/or reduce nicotine craving.

Oral pouched snuff products are normally sized and configured to fitcomfortably and discreetly in a user's mouth between the upper or lowergum and the lip. In general, oral pouched snuff products have agenerally rectangular shape. Some typical shapes (length×width) ofcommercially available oral pouched snuff products are, for instance, 35mm×20 mm, 34/35 mm×14 mm, 33/34 mm×18 mm, and 27/28 mm×14 mm. Thethickness (“height”) of the pouched product is normally within the rangeof from 2 to 8 mm, such as from 5 to 7 mm. The total weight ofcommercially available oral pouched snuff products, such as an oralpouched smokeless tobacco product, are typically within the range fromabout 0.3 to about 3.5 g, such as from about 0.5 to 1.7 g, per pouchedproduct.

The individual portioned-packed snuff products are sealed and cut apartthereby forming rectangular “pillow shaped” (or any other desired form)pouched products. Generally, each final pouched product includesparallel transverse seals at opposite ends and a longitudinal sealorthogonal to the transverse seals. The seals should be of sufficientstrength to preserve the integrity of the pouched product during usewhile not disturbing the users experience. Heat melt-welding is commonlyused today in the production of oral pouched snuff products to createthe seals of the oral pouched snuff product. Heat melt-welding isgenerally performed by using welding apparatus heated to a temperatureranging from about 200° C. to 350° C.

U.S. Pat. No. 8,122,893 B2 discloses a machine for manufacturing pouchesof a smokeless tobacco product. The machine comprises an intermittentlyrotatable dispensing disc with peripheral cavities, a station at whicheach cavity is filled with a given quantity of tobacco equivalent to asingle portion, a push rod mechanism by which the portions of tobaccoare ejected from each cavity of the disc at a transfer station, and aconnecting duct through which the portion of tobacco ejected by the pushrod from each cavity passes directly to a wrapping station where thepouches are formed, filled with the tobacco product and sealed. Arectilinear duct connects the transfer station with the wrappingstation. The wrapping station comprises a tubular element positioned atthe outlet end of the rectilinear duct, around which a tubular envelopeof wrapping material is formed. The tubular envelope is sealedlongitudinally by ultrasonic welders operating in dose proximity to thetubular element. The machine also comprises sealing means locatedbeneath the tubular element, of which the function is to bond thetubular envelope transversely in such a manner as to form a continuoussuccession of pouches, each containing a relative portion of tobacco.Downstream of the transverse sealing means, the machine comprises a pairof transport belts looped around respective pulleys positioned to takeup and direct the continuous succession of pouches toward cutting meansby which the succession of pouches is divided up into single units.

Moreover, US 2012/0067362 A1 relates to a smokeless oral productcomprising a permeable pouch of woven polylactide material which may besealed by, for instance, a ultrasonic welding. These seams are disclosedto be smaller and more precise and therefore tidier and more visuallyappealing. They may also be more comfortable in the mouth of the user.Smaller seams have the further advantage that the required amount ofwoven material is reduced. However, apart from these advantages,ultrasonic welding and heat melt-welding are considered as equivalentwelding techniques.

US 2010/059069 A1 relates to a machine for manufacturing individual bagsor sachets of cohesionless material, such as pouches of snuff for oraluse. The machine comprises an intermittently rotatable dispensing discwith peripheral cavities, a station at which each cavity is filled witha given quantity of tobacco equivalent to a single portion, a push rodmechanism by which the portions of tobacco are ejected from each cavityof the disc at a transfer station, and a connecting duct through whichthe portion of tobacco ejected by the push rod from each cavity passesdirectly to a wrapping station where the pouches are formed, filled withthe tobacco product and sealed. The sealing may be performed usingultrasonic welders.

US 2008/029116 A1 relates to a smokeless tobacco product comprising awater-permeable pouch containing a tobacco formulation and an outerpackaging material enveloping said pouch and being sealed so as to allowa controlled environment to be maintained within. An exemplarygranulated tobacco formulation is disclosed to contain about 15 to about30 parts mannitol powder and to have a moisture content of about 4percent (see Example 2).

During manufacturing of some oral pouched snuff products, in particularduring high-speed manufacturing, undesirable discoloration, such asslightly yellowish, brownish and/or dark spots, has been found on someproducts. These discolored pouched snuff products are usuallydisqualified for distribution to consumers. Thus, there is a need for amethod for producing oral pouched snuff products which provides forreduced waste during pouch formation (i.e. during portion-packaging ofsnuff composition).

SUMMARY OF THE INVENTION

An object of the present disclosure is to alleviate at least the problemdiscussed above, and to provide advantages and aspects not provided byhitherto known technique.

It has now been found that the above-mentioned problem of discolorationof some oral pouched snuff products may occur when the product has amoisture content of at most 20% by weight, in particular at most 10% byweight, based on total weight of the product, and the filling materialcomprises at least 20% by weight, based on dry weight of the fillingmaterial, of at least one ingredient having a melting temperature below180° C.

Some of these oral pouched snuff products may, alternatively oradditionally, have an undesirable slightly burnt flavor.

It has now surprisingly been found that these problems are avoided or atleast reduced when the seals of the oral pouched snuff products arecreated by ultrasonic welding instead of heat-melt welding. This meansfewer disqualified oral pouched snuff products and thus less waste inthe manufacturing thereof. This is particularly useful in high-speedmanufacturing (in view of the portion-packing step) of oral pouchedsnuff products, such as at a production speed providing at least 100pouched products per minute or at least 200 pouched products per minute.

Therefore, according to a first aspect of the present disclosure, thereis provided a method for producing an oral pouched snuff productcomprising a filling material and a saliva-permeable pouch enclosing thefilling material, said product having a moisture content of at most 20%by weight based on total weight of the product, said saliva-permeablepouch having one or more seals, and the filling material comprising atleast 20% by weight, based on dry weight of the filling material, of atleast one ingredient having a melting temperature below 180° C., themethod comprising

supplying and advancing at least one web of packaging material, the atleast one web of packaging material advancing in a direction of travel;

supplying the filling material to the at least one advancing web ofpackaging material; and

welding and cutting the at least one advancing web of packaging materialto which the filling material has been supplied to provide a pluralityof pouches enclosing the filling material, wherein the welding of the atleast one advancing web of packaging material to which the fillingmaterial has been supplied is provided by ultrasonic welding.

In particular, there is provided a method for producing an oral pouchedsnuff product comprising a filling material and a saliva-permeable pouchenclosing the filling material, said product having a moisture contentof at most 20% by weight, in particular at most 10% by weight, based ontotal weight of the product, said saliva-permeable pouch having one ormore seals, and the filling material comprising at least 20% by weight,based on dry weight of the filling material, of at least one ingredienthaving a melting temperature below 180° C., the method comprising

supplying and advancing at least one web of packaging material, the atleast one web of packaging material advancing in a direction of travel;

supplying the filling material to the at least one advancing web ofpackaging material;

forming the at least one advancing web of packaging material into anadvancing tubular web, said forming being performed before or aftersupplying the filling material, thereby providing an advancing tubularweb of packaging material containing the filling material; and

welding and cutting the advancing tubular web of packaging materialcontaining the filling material to provide a plurality of pouchesenclosing the filling material, wherein the welding the tubular web ofpackaging material containing the filling material is provided byultrasonic welding.

The ultrasonic welding and cutting may be performed simultaneouslythereby providing a cut in a welded area.

In welding, materials are joined by fusing. The materials to be joinedare melted in order to allow formation of a solid-state weld.

Melting occurs when the internal energy of a solid increases, typicallyby the application of heat or pressure. At the melting point the changein Gibbs free energy ΔG of the material is zero, but the enthalpy (H)and the entropy (S) of the material are increasing (ΔH, ΔS>0). Meltingoccurs when the Gibbs free energy of the liquid becomes lower than thesolid for that material.

Ultrasonic welding causes local melting of the materials to be joineddue to absorption of vibration energy. The vibrations are introducedacross the joint to be welded. Generally, melting of the material to besealed is caused by applying high frequency ultrasonic acousticvibrations. Ultrasounds have frequencies higher than the upper audiblelimit of a human, which is about 20 kHz for a young adult.

Even though both heat melt-welding and ultrasonic welding cause meltingof the pouch material, usually by melting the binder present in thepouch material, it has surprisingly been found that the problem withdiscoloration, such as formation of discolored spots, of the pouchedproduct is avoided or at least reduced while using ultrasonic welding.

Furthermore, no burnt flavor is experienced by the consumer upon use ofan oral pouched snuff product produced using ultrasonic welding.

A further advantage with the method as disclosed herein is that themachine operators do not risk burning themselves which often may occurwhen heat melt-welding is used for pouch formation.

Moreover, ultrasonic welding enables the formation of seals having areduced seal width in comparison to seals formed by heat melt-welding.

In particular, simultaneous ultrasonic welding and cutting of the atleast one advancing web of packaging material, to which the fillingmaterial has been supplied, may provide a cut in the welded area and mayprovide seals with a seal width equal to or less than 2 mm, such aswithin the range of from 0.1 mm to 2 mm or from 0.1 mm to 1 mm or from0.1 mm to 0.5 mm.

Therefore, according to a second aspect of the present disclosure, thereis provided an oral pouched snuff product comprising a filling materialand a saliva-permeable pouch of a packaging material enclosing thefilling material, the oral pouched snuff product having a moisturecontent of at most 20% by weight, in particular at most 10% by weight,based on the total weight of the product, the saliva-permeable pouchcomprising at least one elongated seal sealing the packaging materialand having a seal length extending along a first direction, the fillingmaterial comprising at least 20% by weight, based on dry weight of thefilling material, of at least one ingredient having a meltingtemperature below 180° C., the at least one elongated seal having a sealwidth extending along a second direction transverse (orthogonal) to thefirst direction, the seal width being equal to or less than 2 mm, suchas within the range of from 0.1 mm to 2 mm or from 0.1 mm to 1 mm orfrom 0.1 mm to 0.5 mm, and the at least one elongated seal being anultrasonically provided weld formed by simultaneous ultrasonic weldingand cutting of the packaging material such that a cut is provided in awelded area, thereby at least one outermost end portion of the pouchbeing sealed by the at least one elongated seal. This means that thepouch lacks protruding unsealed outermost end portions. In other words,the seal is coterminous with an end edge of the packaging materialforming the pouch.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a sealing device which may be used when performingthe method as disclosed herein.

FIG. 2 is a detailed cross-sectional view showing the sealing device inoperation.

FIG. 3a-g illustrate an arrangement which may be used for manufacturingportion-packed oral pouched snuff products in accordance with the methodas disclosed herein.

FIG. 4 illustrates a cross-section through a nip of a pulling unit.

FIG. 5-9 are photographs showing deposition of filling material on theheat melt-welding apparatus when oral pouched snuff products inaccordance with Reference Examples 1-3 were produced.

FIG. 10 is a photograph illustrating discolored pouched snuff productsproduced in accordance with Reference Example 2.

DETAILED DESCRIPTION

By “tobacco” as used herein is meant any part, e.g., leaves, stems, andstalks, of any member of the genus Nicotiana. The tobacco may be whole,shredded, threshed, cut, ground, cured, aged, fermented, or treatedotherwise, e.g., granulated or encapsulated.

The term “tobacco material” is used herein for tobacco leaves or partsof leaves, such as lamina and stem. The leaves and parts of leaves maybe finely divided (disintegrated), such as ground, cut, shredded orthreshed, and the parts of leaves may be blended in defined proportionsin the tobacco material.

“Oral” and “oral use” is in all contexts used herein as a descriptionfor use in the oral cavity of a human, such as buccal placement.

The term “oral pouched snuff products” as used herein includes oralpouched non-tobacco snuff products, which may be nicotine-containing ornicotine-free, as well as oral pouched tobacco-containing snuff products(also called oral pouched smokeless tobacco products).

As used herein the terms “pouched snuff product for oral use” or “oralpouched snuff product” refer to a portion of smokeless tobacco ortobacco-free filling material, which may be nicotine-containing ornicotine-free as described herein, packed in a saliva-permeable pouchmaterial intended for oral use.

As used herein, the term “moisture content” refers to the total amountof oven volatile ingredients, such as water and other oven volatiles(e.g. propylene glycol) in the preparation, composition or productreferred to. The moisture content is given herein as percent by weight(wt %) of the total weight of the preparation, composition or productreferred to.

Some fibrous materials may exhibit hygroscopic properties. Hygroscopicmaterials maintain equilibrium moisture content depending on the ambientmoisture and temperature.

The moisture content as referred to herein may be determined by using amethod based on literature references Federal Register/vol. 74, no.4/712-719/Wednesday, Jan. 7, 2009/Notices “Total moisture determination”and AOAC (Association of Official Analytical Chemics), Official Methodsof Analysis 966.02: “Moisture in Tobacco” (1990), Fifth Edition, K.Helrich (ed). In this method, the moisture content is determinedgravimetrically by taking 2.5±0.25 g sample and weighing the sample atambient conditions, herein defined as being at a temperature of 22° C.and a relative humidity of 60%, before evaporation of moisture and aftercompletion of dehydration. Mettler Toledo's Moisture Analyzer HB43, abalance with halogen heating technology, is used (Instead of an oven anda balance as in the mentioned literature references) in the experimentsdescribed herein. The sample is heated to 105° C. (instead of 99.5±0.5°C. as in the mentioned literature references). The measurement isstopped when the weight change is less than 1 mg during a 90 secondstime frame. The moisture content as weight percent of the sample is thencalculated automatically by the Moisture Analyzer HB43.

The term “additional ingredient” as used herein denotes substances otherthan tobacco material, salt (e.g. sodium chloride, potassium chloride,magnesium chloride, calcium chloride and any combinations thereof), pHadjuster (e.g. sodium hydroxide, potassium hydroxide, potassiumcarbonate, sodium carbonate or sodium bicarbonate) and water.

“Flavour” or “flavouring agent” is used herein for a substance used toinfluence the aroma and/or taste of the snuff product, including, butnot limited to, essential oils, single flavour compounds, compoundedflavourings, and extracts.

As used herein “finely divided” means an average particle size of lessthan 2 mm. The particles of the finely divided tobacco material may besized to pass through a screen of about 10 (US) mesh, i.e. sieve size2.0 mm, or 18 (US) mesh, i.e. sieve size 1.0 mm.

As used herein “% w/w” or “wt %” or “weight %” refers to weight percentof the ingredient referred to of the total weight of the preparation,composition or product referred to.

As used herein, reference to “dry weight percent” refers to weightpercent of the ingredient referred to on the basis of the total weightof dry ingredients. i.e. all ingredients of the preparation, compositionor product referred to excluding moisture content.

As used herein, “melting temperature” or “melting point” are usedinterchangeably and refers to the temperature at which a solid changesstate from solid to liquid at atmospheric pressure. At the meltingpoint, the solid and liquid phases exist in equilibrium.

The melting temperature (melting point) of a solid may be measured byDifferential Scanning Calorimetry (DSC) as is well known to personsskilled in the art. It is generally measured as the peak temperature ofan endothermic event. Detailed information on DSC measurement may befound in P. Gabbott, The Principles and Applications of ThermalAnalysis, Wiley-Blackwell: London, 2007.

As used herein, the term “seam” refers to those parts of the pouchmaterial (packaging material) which are brought into contact with oneanother in order to form the pouch of the pouched product.

The seam further comprises a sealed portion, which is referred to as theseal of the pouched product. In case the outermost portion of the seamis unsealed, the seal is narrower in width than the seam. In case theentire region of the seam is sealed, the width of the seam and the sealis the same.

A lap seam/seal is formed by bringing an outer surface portion of thepouch material and an inner surface portion of the pouch material into asuperposed relation.

A fin seam/seal is formed by bringing inner surface portions of thepouch material into a superposed relation.

A combined lap-and-fin seam/seal is formed by first bringing innersurface portions of the pouch material into a superposed relation,optionally sealing to form a fin seal, and then lap sealing the finseam/seal to an outer surface portion of the pouch material.

In this context, “inner surface” of the pouch material refers to thesurface of the pouch material that will form the interior of the finalpouch, i.e. the side of the pouch material that will face the fillingmaterial enclosed in the pouch. “Outer surface” of the pouch materialrefers to the surface of the pouch material that will form the exteriorof the final pouch.

As used herein, the “seal width” or “width of a seal” of a pouch refersto the maximum width of the sealed portion in the planar extension ofthe packaging material forming the pouch.

As used herein, the “seal length” or “length of a seal” of a pouchrefers to the maximum length of the sealed portion in the planarextension of the packaging material forming the pouch.

Thus, an elongated seal has a seal length extending along the elongationof the seal and a seal width extending transverse (orthogonal) to theelongation of the seal.

The oral pouched snuff product of the method as disclosed herein may bean oral pouched smokeless tobacco product, an oral pouched non-tobacco(i.e. tobacco-free) nicotine-containing snuff product or an oral pouchednon-tobacco (i.e. tobacco-free) nicotine-free snuff product.

The oral pouched snuff product of the method as disclosed herein areintended for use in the oral cavity, such as buccal placement (e.g. byplacing the pouched product between the upper or lower gum and the lipor cheek), and may therefore be referred to as portion-packed (pouched)product for oral use. The oral pouched product is sized and configuredto fit comfortably and discreetly in a user's mouth between the upper orlower gum and the lip or cheek.

The oral pouched product as disclosed herein may have an oblong shape,such as a substantially rectangular shape (as seen from above when theproduct is placed on a planar surface). In such case, the longitudinaldirection of the product corresponds to the length of the substantiallyrectangular product and the transverse direction of the productcorresponds to the width of the substantially rectangular product.

The total weight of the oral pouched product (including filling materialand pouch) may be within the range of from 0.2 g to 2.0 g, such aswithin the range of from 0.3 g to 1.5 g or from 0.3 to 0.7 g.

The pouch of the oral pouched product may be made of any suitablesaliva-permeable (and preferably non-dissolvable) pouch material, suchas non-woven.

A binder may be included in the pouch material to facilitate sealing ofthe material by ultrasonic welding. The binder may be any suitableadhesive material, and suitable binders will be known to the skilledperson. For example, thermoplastic binders based on polyacrylates can beused as suitable polymer binders.

The pouch material (herein also called packaging material) may be anonwoven material comprising staple fibres of regenerated cellulose,such as viscose rayon staple fibres, and a binder, such as apolyacrylate.

The pouch material (herein also called packaging material) may benonwoven comprising viscose rayon staple fibres and within the range offrom 35% to 45% by weight, based on dry weight of the nonwoven, of abinder, such as a polyacrylate.

The pouch material may also comprise additional ingredients, such asflavouring agents and/or colorants.

Oral Pouched Smokeless Tobacco Products

In the method as disclosed herein, the oral pouched snuff product may bean oral pouched smokeless tobacco product having a moisture content ofat most 20% by weight, in particular at most 10% by weight, based on thetotal weight of the product.

The oral pouched smokeless tobacco product, having a moisture content ofat most 20% by weight or at most 10% by weight, based on the totalweight of the product, may include a tobacco composition (as fillingmaterial) comprising divided (e.g. ground or cut) tobacco material, salt(e.g. sodium chloride, potassium chloride, magnesium chloride, calciumchloride or any combinations thereof), pH adjuster (e.g. sodiumcarbonate, sodium hydroxide, potassium hydroxide, potassium carbonate,sodium carbonate, sodium bicarbonate or magnesium carbonate) andoptionally one or more additional ingredients, such as flavouringagents, cooling agents, heating agents, sweetening agents, colorants,humectants (e.g. glycerol or propylene glycol), antioxidants,preservatives (e.g. as potassium sorbate), binders, fillers, non-tobaccoplant fibers and/or disintegration aids.

Typically, the amount of tobacco material in the smokeless tobaccocomposition is within the range of from about 50 to about 80% w/w basedon dry weight of the smokeless tobacco composition. The tobacco materialis typically finely divided, such as cut (shredded) or ground tobaccomaterial, in granulated form or in powder form, i.e. tobacco flour, forinstance having an average particle size of about 1 mm to about 2 mm.The tobacco material may be cured (aged) tobacco material. The tobaccomaterial may be a bleached tobacco material.

Generally, cured and ground or cut tobacco material has moisture contentwithin the range of from 3% to 15% w/w, such as within the range of from3 to 10% w/w or 5% to 8% w/w. Generally, the pH of such finely dividedtobacco material is within the range of from 4 to 6, such as within therange of from 4.5 to 6.

pH of divided tobacco material, such as tobacco flour, can be measuredby adding 100 ml of distilled water to 5 gram of tobacco material, forinstance in a 100 ml Erlenmeyer flask, stirring the resulting mixture atroom temperature with a magnetic stirrer at 100 rpm for about 5 minutes,and then measuring the pH of an extract obtained therefrom with acalibrated (according to the manufacturer's instructions) pH meter. Forcorrectness of readings, the sample solutions shall be analyzed withinone hour.

Salt, such as sodium chloride, potassium chloride, magnesium chloride,calcium chloride and any combinations thereof, is added mainly for itseffect on taste but it also has a preservative action which contributesto improved shelf life of the product. Salt, such as sodium chloridelowers the water activity of the products, thus preventingmicro-organisms from growing. The natural occurrence of sodium chloridein tobacco material is normally below 2% w/w, typically below 1% w/w,based on dry weight of the tobacco material. Normally, the amount ofadded salt in the smokeless tobacco composition is within the range offrom about 0.5 to about 10% w/w based on dry weight of the tobaccocomposition.

pH adjusters, such as sodium carbonate and/or sodium bicarbonate, areadded to bring the pH value to the slightly alkaline side, such as aboutpH 7.5 to 8.5. Sodium carbonate may also be used to give the productstheir characteristic aroma profile. Typically, the amount of pH adjusterin the smokeless tobacco composition is less than about 7% w/w, such aswithin the range of from 3 to 5% w/w, based on dry weight of the tobaccocomposition.

Humectants, such as propylene glycol or glycerol, may also be added.Normally, the amount of humectant in the smokeless tobacco compositionis within the range of from about 5 to about 10% w/w based on dry weightof the tobacco composition.

Flavours used are generally natural or nature identical compounds thatcomply with food regulations. Flavours may be dissolved in ethanol whenadded.

In addition, the smokeless tobacco composition may optionally compriseother botanical filling material as filler, such as any non-tobaccoplant fiber. Examples of non-tobacco plant fibers are maize fibers, oatfibers, tomato fibers, barley fibers, rye fibers, sugar beet fibers,buck wheat fibers, potato fibers, apple fibers, cocoa fibers, bamboofibers and citrus fibers. The amount of non-tobacco plant fibermaterial, such as bamboo fibers, in the smokeless tobacco compositionmay be within the range of from about 1 to about 60% w/w, such as fromabout 2 to about 20% w/w, based on dry weight of the smokeless tobaccocomposition.

Other fillers, which may be used to, for instance, increase the volumeof the smokeless tobacco composition, may be microcrystalline cellulose,cellulose and other polysaccharides, cellulose derivatives, polyols,such as xylitol, maltitol, mannitol and sorbitol, and any combinationsthereof.

Oral Pouched Non-Tobacco Nicotine-Free Snuff Products

In the method as disclosed herein, the oral pouched snuff product may bean oral pouched non-tobacco nicotine-free snuff product having amoisture content of at most 20% by weight, in particular at most 10% byweight, based on the total weight of the product.

The oral pouched non-tobacco nicotine-free snuff product, having amoisture content of at most 20% by weight or at most 10% by weight,based on the total weight of the product, may include a non-tobacconicotine-free composition (as filling material) comprising dividednon-tobacco plant material (e.g. in flour form), salt (e.g. sodiumchloride, potassium chloride, magnesium chloride, calcium chloride andany combinations thereof), and optionally one or more additionalingredients, such as flavouring agents, cooling agents, heating agents,sweetening agents, colorants, humectants (e.g. propylene glycol orglycerol), antioxidants, preservatives (e.g. potassium sorbate),binders, fillers, and disintegration aids.

Typically, the amount of non-tobacco plant material in the nicotine-freenon-tobacco snuff composition is within the range of from about 50 to80% w/w based on dry weight of the composition.

Examples of non-tobacco plant fibres used in the non-tobacco plantmaterial are dietary plant fibres, such as maize fibers, oat fibers,tomato fibers, barley fibers, rye fibers, sugar beet fibers, buck wheatfibers, potato fibers, apple fibers, cocoa fibers, bamboo fibers, citrusfibers and any combinations thereof.

The additional ingredients and the amounts thereof normally used aresimilar as described herein in relation to oral pouched smokelesstobacco products.

Examples of non-tobacco nicotine-free snuff products and theirmanufacturing are described in WO 2007/126361 and WO 2008/133563.

Oral Pouched Non-Tobacco Nicotine-Containing Snuff Products

In the method as disclosed herein, the oral pouched snuff product may bean oral pouched non-tobacco nicotine-containing snuff product having amoisture content of at most 20% by weight, in particular at most 10% byweight, based on the total weight of the product.

The oral pouched non-tobacco nicotine-containing snuff product, having amoisture content of at most 20% by weight or at most 10% by weight,based on the total weight of the product, may comprise a particulatematerial (as filling material) comprising nicotine or a salt thereof,such as nicotine bitartrate, and one or more fillers, such aspolysaccharides (e.g. maltitol and mannitol) and/or microcrystallinecellulose.

Examples of oral pouched nicotine-containing non-tobacco snuff productsand their manufacturing are described in WO 2012/134380.

The portion-packaging procedure (i.e. the formation of pouches enclosingthe filling material) of oral pouched non-tobacco snuff products, whichalso may be referred to as oral smokeless non-tobacco snuff products,may be similar to the procedure of manufacturing oral pouched smokelesstobacco products except for that the tobacco material is replaced by anon-tobacco material (i.e. a tobacco-free material).

The oral pouched non-tobacco snuff products as disclosed herein are usedin the same manner as the corresponding oral pouched tobacco snuffproducts. Oral pouched non-tobacco snuff products may also be used forthe administration of drugs, as delivery systems intended for oral useand controlled release of biologically active substances.

The oral pouched snuff product may be packaged in a box, can, canister,cardboard box, bag, stick-pack wrapping, plastic wrapping, paperwrapping, foil wrapping, blister pack or on a tray.

The oral pouched (i.e. portion-packed) snuff products, produced inaccordance with the method as disclosed herein, may be positionedrandomly in a container or in a pattern, for instance as described in WO2012/069505. Alternatively or additionally, each oral pouched snuffproduct may be placed in a sachet.

Filling Material and Ingredients Having a Melting Temperature Below 180°C.

The term “filling material” as used herein may also be referred to asfilling composition or snuff composition.

Most oral pouched tobacco-containing snuff products as well as oralpouched non-tobacco snuff products contain carbohydrates.

Tobacco naturally contains sugars and curing of the tobacco may increasethe sugar content as polysaccharides are broken down to sugar (mono- anddisaccharides).

Oral pouched non-tobacco snuff products may comprise plant materialswhich normally contain carbohydrates, such as sugars and starch, and/orcarbohydrate-containing fillers, such as maltitol and/or mannitol.

Oral tobacco snuff products as well as oral non-tobacco snuff productsmay also have carbohydrates added in the manufacturing process forimproving the taste and/or texture of the product.

WO 2015/067372 discloses oral smokeless tobacco products and oralsmokeless non-tobacco snuff products comprising xylitol in an amount offrom 6 to 20% w/w of the final product. Xylitol is a sugar alcohol thatmay be used as a sugar substitute.

For instance, the non-tobacco nicotine-containing snuff productsdisclosed in WO 2012/134380 may comprise polyols, such as mannitol,maltitol and xylitol, monosaccharides, such as glucose and fructose, anddisaccharides, such as maltose, as fillers and/or sweeteners. In theexamples of WO 2012/134380, maltitol and/or mannitol are used in amountsabove 40% by weight, based on the total weight of the compositions.

Examples of monosaccharides that may be used in oral pouched tobaccosnuff products and oral pouched non-tobacco snuff products are glucose(also called dextrose) and fructose.

An example of disaccharides that may be used in oral pouched tobaccosnuff products and oral pouched non-tobacco snuff products is maltose.

Examples of sugar alcohols that may be used in oral pouched tobaccosnuff products and oral pouched non-tobacco snuff products are maltitol,mannitol, sorbitol, xylitol, erythritol, arabitol, ribotol, isomalt,dulcitol, iditol, and lactitol. Sugar alcohols are polyols derived frommonosaccharides or disaccharides that have a partially or fullyhydrogenated form.

Examples of other sweeteners which may be used in oral pouched tobaccosnuff products and oral pouched non-tobacco snuff products are maltoland sucralose.

In Table 1, the approximate melting temperatures of some of theseingredients are presented (the values have been found in literature).

TABLE 1 Ingredient Melting temperature [° C.] Maltitol ~145-150 Mannitol~168 Sorbitol ~111 Xylitol ~92-96 Erythritol ~121 Arabitol ~103 Ribitol~102 Isomalt ~145-150 Iditol ~70-79 Lactitol ~146 Glucose ~146 Fructose~103 Maltose ~160-165 Maltol ~161-162 Sucralose   125

In the method as disclosed herein, the oral pouched snuff product mayhave a moisture content of at most 20% by weight, such as within therange of from 0.1% to 20% by weight or 1% to 15% by weight, based ontotal weight of the product.

In the method as disclosed herein, the oral pouched snuff product mayhave a moisture content of at most 10% by weight, such as within therange of from 0.1% to 10% by weight or 1% to 10% by weight, based ontotal weight of the product.

In the method as disclosed herein, the oral pouched snuff product mayhave a moisture content of at most 5% by weight, such as within therange of from 0.1% to 5% by weight or 1% to 5% by weight, based on totalweight of the product.

In the method as disclosed herein, the filling material of the oralpouched snuff product may comprise within the range of from 20% to 100%by weight, such as within the range of from 20% to 95% by weight or from20% to 90% by weight or from 30% to 90% by weight or from 40% to 90% byweight, based on dry weight of the filling material, of at least oneingredient having a melting temperature below 180° C., such as a meltingtemperature of at most 175° C. or at most 170° C. or at most 165° C. orat most 160° C. or at most 155° C.

In the method as disclosed herein, the filling material of the oralpouched snuff product may comprise at least 25% by weight or at least30% by weight or at least 35% by weight, based on dry weight of thefilling material, of at least one ingredient having a meltingtemperature below 180° C., such as a melting temperature of at most 175°C. or at most 170° C. or at most 165° C. or at most 16000° C. or at most155° C.

In the method as disclosed herein, the at least one ingredient may havea melting temperature within the range of from 70° C. to 175° C., suchas within the range of from 70° C. to 165° C. or from 70° C. to 155° C.or from 90° C. to 155° C.

The at least one ingredient having a melting temperature below 180° C.may be at least partly crystalline.

In the method as disclosed herein, the at least one ingredient having amelting temperature below 180° C. may be selected from the groupconsisting of monosaccharides, disaccharides, sugar alcohols and anycombinations thereof.

In the method as disclosed herein, the at least one ingredient having amelting temperature below 180° C. may be a sugar alcohol, such asmaltitol, mannitol, sorbitol, xylitol and any combinations thereof.

In the method as disclosed herein, the at least one ingredient having amelting temperature below 180° C. may be a mono- or disaccharide, suchas glucose, fructose, maltose and any combinations thereof.

In the method as disclosed herein, the oral pouched snuff product may bean oral pouched non-tobacco nicotine-containing snuff product and thefilling material may comprise at least 25% by weight or at least 30% byweight or at least 35% by weight, such as within the range of from 40%to 90% by weight or from 45% to 80% or from 45% to 60% by weight, basedon the total weight of the product, of at least one sugar alcohol havinga melting temperature below 180° C., such as a melting temperature of atmost 175° C. or at most 170° C. or at most 165° C. or at most 160° C. orat most 155° C.

In the method as disclosed herein, the oral pouched snuff product may bean oral pouched non-tobacco nicotine-containing snuff product and thefilling material may comprise at least 25% by weight or at least 30% byweight or at least 35% by weight, such as within the range of from 40%to 90% by weight or from 45% to 80% or from 45% to 60% by weight, basedon the total weight of the product, of at least one sugar alcoholselected from the group consisting of maltitol, mannitol and anycombinations thereof.

In the method as disclosed herein, the oral pouched snuff product may bean oral pouched non-tobacco nicotine-containing snuff product and thefilling material may comprise at least 25% by weight or at least 30% byweight or at least 35% by weight, such as within the range of from 40%to 90% by weight or from 45% to 80% or from 45% to 60% by weight, basedon the total weight of the product, of maltitol.

As discussed above, ultrasonic welding may generate seals that arenarrower in width (smaller) and more precise than seals created by heatmelt-welding. Such seals are therefore generally tidier, more visuallyappealing and more discrete than seals created by heat melt-welding.They may also be more comfortable in the mouth of the user. Narrowerseals have the further advantage that the amount of pouch materialrequired may be reduced.

Thus, the method as disclosed herein may provide an oral pouched snuffhaving one or more ultrasonically provided seals with a seal width equalto or less than 2 mm, such as within the range of from 0.1 mm to 2 mm orfrom 0.1 mm to 1 mm or from 0.1 mm to 0.5 mm.

In the method as disclosed herein, the ultrasonic welding and thecutting of the web of packaging material to which the filling materialhas been supplied, for instance a tubular web of packaging materialcontaining the filling material, may be performed simultaneously therebyproviding a cut in a welded area. This means that the entire region ofthe seam(s) of the pouch will be sealed and the pouch will lackprotruding unsealed outermost end portions. In other words, the sealwill be coterminous with an end edge of the packaging material formingthe pouch. Thus, at least one outermost end portion of the pouch issealed by the at least one elongated seal.

There is, according to the present disclosure, also provided an oralpouched snuff product comprising a filling material and asaliva-permeable pouch of a packaging material enclosing the fillingmaterial, the oral pouched snuff product having a moisture content of atmost 20% by weight, in particular at most 10% by weight, based on totalweight of the product, the saliva-permeable pouch comprising at leastone elongated seal having a seal length extending along a firstdirection, and the filling material comprising at least 20% by weight,based on dry weight of the filling material, of at least one ingredienthaving a melting temperature below 180° C., wherein the at least oneelongated seal sealing the packaging material has a seal width extendingalong a second direction transverse (orthogonal) to the first direction,said width being equal to or less than 2 mm, such as within the range offrom 0.1 mm to 2 mm or from 0.1 mm to 1 mm or from 0.1 mm to 0.5 mm, andthe at least one elongated seal is an ultrasonically provided weldformed by simultaneous ultrasonic welding and cutting of the packagingmaterial such that a cut is provided in a welded area, thereby at leastone outermost end portion of the pouch is sealed by the at least oneelongated seal.

It should be understood that features and advantages described herein inrelation to the method of the present disclosure applies also to theoral pouched snuff product of the present disclosure.

The oral pouched snuff product, as disclosed herein, has a longitudinaldirection and a transverse direction perpendicular to the longitudinaldirection, the saliva-permeable pouch having at least one elongated sealhaving a seal length extending along the transverse direction of theproduct and a seal width extending along the longitudinal direction ofthe product, wherein said seal width being equal to or less than 2 mm,such as within the range of from 0.1 mm to 2 mm or from 0.1 mm to 1 mmor from 0.1 mm to 0.5 mm.

In particular, the oral pouched snuff product, as disclosed herein, mayhave a first elongated seal and a second elongated seal, each of saidfirst and second elongated seals sealing an outermost end portion of theoral pouched snuff product, each of said first and second elongatedseals has a seal length extending along the transverse direction of theproduct and a seal width extending along the longitudinal direction ofthe product, wherein said seal width being equal to or less than 2 mm,such as within the range of from 0.1 mm to 2 mm or from 0.1 mm to 1 mmor from 0.1 mm to 0.5 mm. The first elongated seal may seal a firstoutermost end portion of the pouch, and the second elongated seal mayseal a second outermost end portion of the pouch. Thus, the first andsecond outermost end portions of the pouch are located at oppositeperipheral sides of the oral pouched snuff product.

The pouch of the oral pouched snuff product, as disclosed herein, mayadditionally or alternatively comprise an additional elongated sealhaving a seal length extending along the longitudinal direction of theproduct and a seal width extending along the transverse direction of theproduct, wherein said seal width being equal to or less than 2 mm, suchas within the range of from 0.1 mm to 2 mm or from 0.1 mm to 1 mm orfrom 0.1 mm to 0.5 mm.

The additional elongated seal of the oral pouched snuff product may beultrasonically provided weld.

The filling material of the oral pouched snuff product, as disclosedherein, may comprise within the range of from 20% to 100% by weight,such as within the range of from 20% to 95% by weight or from 20% to 90%by weight or 30 to 90% by weight or from 40% to 90% by weight, based ondry weight of the filling material, of the at least one ingredienthaving a melting temperature below 180° C.

The moisture content of the oral pouched snuff product, as disclosedherein, may be at most 5% by weight, such as within the range of from0.1 to 5% by weight, based on total weight of the product.

The least one ingredient having a melting temperature below 180° C.contained in the filling material of the oral pouched snuff product asdisclosed herein may be selected from the group consisting ofmonosaccharides, disaccharides, sugar alcohols and any combinationsthereof.

The filling material of the oral pouched snuff product as disclosedherein may comprise a sugar alcohol having a melting temperature below180° C., such as maltitol, mannitol, sorbitol and/or xylitol.

The filling material of the oral pouched snuff product as disclosedherein may comprise a mono- or disaccharide having a melting temperaturebelow 180° C., such as glucose, fructose, maltose and any combinationsthereof.

The oral pouched snuff product may be an oral pouched non-tobacconicotine-containing snuff product and the filling material may compriseat least 35% by weight, such as within the range of from 40% to 90% byweight or from 45% to 80% or from 45% to 60% by weight, based on thetotal weight of the product, of at least one sugar alcohol having amelting temperature below 180° C.

The oral pouched snuff product may be an oral pouched non-tobacconicotine-containing snuff product and the filling material may compriseat least 35% by weight, such as within the range of from 40% to 90% byweight or from 45% to 80% or from 45% to 60% by weight, based on thetotal weight of the product, of at least one sugar alcohol selected fromthe group consisting of maltitol, mannitol and any combinations thereof.

The oral pouched snuff product may be an oral pouched non-tobacconicotine-containing snuff product and the filling material may compriseat least 35% by weight, such as within the range of from 40% to 90% byweight or from 45% to 80% or from 45% to 60% by weight, based on thetotal weight of the product, of maltitol.

As described above, the method as disclosed herein may comprise formingan advancing web of packaging material into an advancing tubular web,the forming being performed before or after supplying the fillingmaterial, thereby providing an advancing tubular web containing thefilling material; and welding and cutting the advancing tubular web ofpackaging material containing the filling material to provide aplurality of pouches enclosing the filling material, wherein the weldingof said tubular web of packaging material containing the fillingmaterial is provided by ultrasonic welding.

In order to avoid discoloration of the oral pouched snuff product asdisclosed herein, welding of the tubular web after the filling material(comprising the at least one ingredient having a melting temperaturebelow 180° C.) may be performed by ultrasonic welding.

However, in case the advancing tubular web of packaging material isformed before supplying the filling material, a longitudinal sealextending along the direction of travel of the tubular web may beprovided by heat melt-welding without any risk of discoloration of theproduct.

FIGS. 1 and 2 illustrate a sealing device 1 for sealing a packagingmaterial enclosing a snuff composition to provide portion-packed oralpouched snuff products using the method as disclosed herein.

The sealing device 1 comprises an anvil 3 and a sonotrode 5, which isarranged opposite to the anvil 3 to allow passage of the packagingmaterial 7 in a gap 9 formed between the sonotrode 5 and the anvil 3.The sonotrode 5 is adapted for transmitting ultra-sonic energy. In theillustrated embodiment of FIG. 1, a portion 10 of filling material hasalready been enclosed by the packaging material 7 before reaching thesealing device 1. A portion-packed oral pouched snuff product comprisesthe portion 10 of the filling material and a piece of the packagingmaterial 7, the packaging material 7 enclosing the portion 10 of thesnuff composition.

The anvil 3 and the sonotrode 5 are configured for simultaneous weldingand cutting of the packaging material 7. The welding operation isutilized to provide the pouched snuff product with one or more seals,which may be longitudinal seals and/or transverse seals. The cuttingoperation is utilized to cut the packaging material 7, e.g. to separatetwo consecutive pouched products from each other or to separatesuperfluous packaging material from a longitudinal seal.

The packaging material 7 is adapted to advance in a direction of travelDT through the gap 9. The orientation of the direction of travel DT inrelation to the orientation of the sonotrode 5 and the anvil 3 dependson whether a longitudinal or transverse seal is to be formed. For alongitudinal seal, the direction of travel would be out of the paper inFIG. 1. For providing a transverse seal 6, as is illustrated in FIG. 1,the direction of travel DT is downwards in FIG. 1.

The packaging material 7 is formed to a tubular web, which may comprisea longitudinal seal 8. At the desired location of the transverse seal 6,there is no filling material. Instead a first portion 7 a of thepackaging material 7 directly faces a second portion 7 b of thepackaging material 7. These two portions 7 a, 7 b are to be weldedtogether in the transverse seal 6.

The anvil 3 comprises a first operation surface 11 and the sonotrode 5comprises a second operation surface 13, which is located opposite tothe first operation surface 11. The first operation surface 11 of theanvil 3 comprises a first welding surface 11 a and a second weldingsurface 11 b. A cutting edge 15 delimits the first welding surface 11 aand the second welding surface 11 b from each other. The cutting edge 15is located at a portion of the first operation surface 11 being adjacentto the narrowest portion of the gap 9. The cutting edge 15 is adapted tocut through the packaging material 7. In the illustrated embodiment, thecutting edge 15 is adapted to cut through the first and second portions7 a, 7 b of the packing material 7. The second operation surface 13 isnon-angled, i.e. flat. The direction of travel DT is substantiallyparallel to the non-angled operation surface 13 of the sonotrode 5. Thefirst and second welding surfaces 11 a, 11 b provide the welding, andthe cutting edge 15 provides the cutting. Thus, ultrasonic welding andcutting are performed simultaneously thereby providing a cut in a weldedarea. With the sealing device 1, the cut is placed in the welded area,i.e. there are no non-welded portions adjacent to the cut. In otherwords, the seal will be coterminous with the cut edge (end edge) of thepackaging material. The cutting and welding is thereby madesimultaneously in time, in the same operation step and next to eachother.

The extension direction of the cutting edge 15 defines a first directionD₁ of the anvil 3. A main direction A of the anvil 3 defines a seconddirection D₂, which is perpendicular to the first direction D₁. A thirddirection D₃ is perpendicular to both the first direction D₁ and to thesecond direction D₂. Since FIGS. 1 and 2 illustrates providing thetransverse seal 6, the first direction D₁ substantially coincides with atransverse direction of the packing material 7 and the third directionD₃ coincides with the direction of travel DT of packaging material 7 butpointing in the opposite direction.

The first welding surface 11 a defines a first extension plane. In theillustrated exemplary device, the first welding surface 11 a constitutesan inclined planar surface, such that the first extension plane isdefined by the inclined planar surface. In case, the first weldingsurface 11 a does not form a planar surface, e.g. by having a curvedsurface, the first extension plane is defined as a mean plane to thefirst welding surface 11 a, i.e. the plane having the least squareddistance from the first welding surface 11 a to that plane.

The first extension plane assumes an angle α being between 70° and 90°in relation to the main direction A of the anvil 3, being parallel tothe second direction D₂, preferably the angle α being in the range from72° to 89°, more preferably from 75° to 88°, most preferably from 80° to85°. In the illustrated exemplary device the angle α is substantially82°.

The second welding surface 11 b defines a second extension plane. In theillustrated exemplary device, the second welding surface 11 bconstitutes an inclined planar surface, such that the second extensionplane is defined by the inclined planar surface. The orientation of thesecond extension plane differs from that of that the first extensionplane. The second extension plane assumes an angle β being between 70°and 90° in relation to the main direction A of the anvil 3, preferablythe angle β being in the range from 72° to 89°, more preferably from 75°to 88°, most preferably from 80° to 85°. In the illustrated embodiment,the angle β is substantially 82°. Hence, the angles α, β of the firstand second welding surfaces 11 a, 11 b are of equal size but differentorientation in the illustrated exemplary device of FIGS. 1 and 2.However, also their sizes may differ.

As mentioned above, the second operation surface 13 is non-angled. Itthus assumes an angle of 90° in relation to the second direction D₂.

The cutting edge 15 delimits one side of the first welding surface 11 aand the corresponding side of the second welding surface 11 b. Whenviewed in along the main direction A, the first welding surface 11 a andthe second welding surface 11 b form a rectangular region. One side ofthe rectangles is delimited by the cutting edge 15. The cutting edge 15thus separates the first welding surface 11 a from the second weldingsurface 11 b. Yet the two welding surfaces 11 a, 11 b extend all the wayto the cutting edge 15, such that there is no interspace between theweld and the cut, i.e. there are no non-welded portions adjacent to thecut.

The first welding surface 11 a comprises a first welding zone 17 adelimited at one side by the cutting edge 15, and the second weldingsurface 11 b comprises a second welding zone 17 b also delimited at oneside by the cutting edge 15. In the first and second welding zones 17 a,17 b, the anvil 3 and the sonotrode 5 are close enough to be able tomelt the first and second portions 7 a, 7 b of the packaging materialand thereby join them by welding. The widths w₁, w₂ of the first andsecond welding zones 17 a, 17 b in the third direction D₃ depend oncharacteristics of the sealing device 1, the packaging material 7 andtheir interaction. Examples of device characteristics are angles of theoperation surfaces 11, 13 relative to each other, distance between theoperation surfaces 11, 13, material properties of the anvil 3 and thesonotrode 5, frequency and energy of the ultra sound of the sonotrode 5.Examples of packaging material characteristics are type of material,melting point, thickness, surface roughness. In the illustratedexemplary device, the first and second welding zones 17 a, 17 b have thesame widths w₁, w₂, but the widths w₁, w₂ may also differ. Further, thewidth w₁ of the first welding zone 17 a may be the same as for the firstoperation surface 11 and/or the width w₂ of the second welding zone 17 bmay be the same as for the second operation surface 13. However,typically the welding zone is narrower than the operation surface, i.e.the width of the weld is less than the width of the gap 9 as seen alongthe direction of travel DT.

By using the exemplary sealing device, the packaging material 7 iswelded on both sides of the cutting edge 15. This configuration couldsuitably be used for a transverse seal 6, as is illustrated in FIGS. 1and 2, wherein the cut performed by the cutting edge is utilized toseparate individual pouched products and for which there is a desirethat both ends of the individual pouched products should be adequatelysealed. The direction of travel DT would thus be parallel to thenon-angles second operation surface 13 but substantially perpendicularto the extension direction of the cutting edge 15, see FIGS. 1 and 2.For such a transverse seal 6, it may be advantageous that the angles α,β of the extension planes are of the same size and the first and secondwelding zones 17 a, 17 b have the same widths w₁, w₂.

A sealing device like the one illustrated in FIGS. 1 and 2 would also besuitable for making a longitudinal seal. The direction of travel wouldthen be in the first direction D₁, i.e. parallel to the extensiondirection of the cutting edge 15, i.e. out of the paper in FIG. 2. Inthat case, parts of the packaging material 7 being outside the cut,which parts are to be removed e.g. as strips, are joined to each other.The combined strip will be stronger than the individual strips and willthus better withstand a pulling force, such that it is less likely to betom off.

FIGS. 3a-g illustrate an arrangement 19 useful for manufacturingportion-packed oral pouched snuff products 43 in accordance with themethod as disclosed herein. The arrangement 19 comprises a first feedingunit 23 for supplying a planar web 25 of the packaging material 7, asecond feeding unit 27 for supplying a filling material 29 to theadvancing web 25, a forming unit 31 for forming a tubular web 32 of theplanar web 25 of the packaging material 7, a device 33 for making alongitudinal seal and a device for making a transverse seal, illustratedas the sealing device 1 of FIGS. 1 and 2.

The second feeding unit 27 may be located downstream or upstream of theforming unit 31. If placed downstream, the web 25 is first formed to atubular web 32 and thereafter the filling material 29 is placed in thetubular web 32 as a portion 10, as for the arrangement 19 illustrated inFIGS. 3a-g . Alternatively, the filling material 29 may be placed on theplanar web 25 as a portion 10 before the planar web 25 is formed to atubular web, such that the packaging material 7 is arranged around thesnuff portion to form the tubular web, thereby enclosing the snuffportion 10.

At least one of the devices for making a longitudinal seal and thedevice for making a transverse seam may utilize ultra-sound to performsimultaneous welding and cutting, e.g. by the device as described inconjunction with FIGS. 1-2, in order to obtain a seal. Hence, in thearrangement 19, welding and cutting is performed simultaneously and inthe same operation step for at least one of the seals.

In the illustrated embodiment of FIGS. 3a-g , the transverse seal 6 isformed by a device like the one described in conjunction with FIGS. 1and 2. The sonotrode 5 and the anvil 3 are arranged to be displaced in areciprocating way in relation to the tubular web 32 in the seconddirection D₂, between a first position, illustrated in FIG. 3a , beingin contact with the tubular web 32 and a position, illustrated in FIG.3c , being out of contact with the tubular web 32.

Further, the sonotrode 5 and the anvil 3 are adapted to follow thetubular web 32 when moving in the direction of travel DT, i.e. in adirection opposite to the third direction D₃, while performing thesimultaneous welding and cutting, in order to be able to follow thetubular web 32 to a downstream position, illustrated in FIG. 3 b.

The anvil 3 moves along a path 37 which has a first portion 37 aparallel to and adjacent to the tubular web 32, a second portion 37 bmoving the anvil 3 away from the tubular web 32, a third portion 37 cbringing the anvil 3 back upstream and a fourth portion 37 d bringingthe anvil 3 back into contact with the tubular web 32. The sonotrode 5follows a corresponding path 39, having corresponding portions 39 a, 39b, 39 c, 39 d. See paths 37, 39 illustrated in FIG. 3a . The paths 37,39 are further described below.

FIG. 3a illustrates a start of the method. A longitudinal seal, e.g.like the longitudinal seal 8 illustrated in FIG. 1, is continuouslyformed in the advancing tubular web 32 by the device 33 for making alongitudinal seal. The anvil 3 and the sonotrode 5 assume the firstposition, in which they start welding. A portion 10 of the fillingmaterial 29 is filled from above into the tubular web 32. The fillingmaterial moves downwards by gravity until it reaches the portion of thetubular web 32, which is in the gap 9 between the anvil 3 and thesonotrode 5.

The anvil 3 and the sonotrode 5 move downstream together with thetubular web 32 while performing the welding along the respective firstportions 37 a, 39 a of their paths. The anvil 3 and the sonotrode 5 havethen reach a second position being downstream of the first position butyet in contact with the tubular web 32. See FIG. 3b . The tubular web 32is cut by the cutting edge 15 leaving a transverse seal 41.

Thereafter the anvil 3 and the sonotrode 5 are moved away from thetubular web 32 along the second portions 37 b, 39 b of their respectivepaths until they reach a respective third position, such that they areno longer in contact. The already formed transverse seal 41 prevents theportion 10 of the filling material from falling out; see FIG. 3 c.

As a next step, the anvil 3 and the sonotrode 5 are moved back upstreamalong the third portions 37 c, 39 c of their respective paths to afourth position being out of contact with the tubular web 32; see FIG. 3d.

Then the anvil 3 and the sonotrode 5 are moved back to the firstposition along the fourth portions 37 d, 39 d of their respective paths,such that they start forming a new transverse seal 45; see FIG. 3 e.

The anvil 3 and the sonotrode 5 move along the respective first portions37 a, 39 a of their paths together with the tubular web 32 whileperforming the welding until the anvil 3 and the sonotrode 5 reach thesecond position being downstream of the first position but yet incontact with the tubular web 32; see FIG. 3f . The tubular web 32 is cutby the cutting edge 15, leaving a transverse seal 45 at the upper edgeof the pouched product 43 and a corresponding transverse seal 46 at thelower edge of the next pouched product, which has been filled by a nextportion 10 of the filling material.

Thereafter the anvil 3 and the sonotrode 5 are moved away from thetubular web 32 along the second portions 37 b, 39 b of their respectivepaths until they reach a respective third position, illustrated in FIG.3g , such that they are no longer in contact, as is already describedabove for FIG. 3c . The anvil 3 and the sonotrode 5 continue to movealong their paths 37, 39 described above, while the tubular web 35 movesin the direction of travel DT.

In order to help separating the tubular web 32 in the cut, thearrangement 19 may further comprise a pulling unit, illustrated in FIG.3f as a nip 47 between a pair of rollers 49, 51 arranged to pull thepouched product 43 in the direction of travel DT. Thereby the tubularweb 32 is tensioned in a controllable way in order to make a separationof the pouched product 43 from the next pouched product easier. Thedistance z between the nip 47 and the cutting edge 15 when the sealingdevice is in the second position, see FIG. 3f , roughly corresponds tothe extension of the pouched product 43 in the direction of travel DT.Hence, if the arrangement 19 is utilized for manufacturingportion-packed oral pouched snuff products of different sizes, thedistance z is preferably adjustable. After passing the nip 47, thepouched product 43 is placed on a conveyer 52.

FIG. 4 illustrates a cross-section through the nip 47 as seen from abovein FIG. 3g . In order to be able to pull the pouched product 43 filledwith the portion 10 of the filling material without destroying thepouched product 43 in the nip 47, at least one of the rolls, illustratedas the left-hand roll 49, is provided with a plurality of ridges 53,having interspaces 55 between the ridges 53. The ridges 53 will help topull the pouched product 43, while the interspaces 55 give room for thefilling material. Thereby, it is possible to pull the pouched product 43through the nip 47 without destroying it. There are at least two ridges53. The other roll 51 may be flat as is illustrated or it may alsocomprises ridges.

The longitudinal seal, e.g. like the longitudinal seal 8 illustrated inFIG. 1, may be performed by heat sealing in the device 33 for making alongitudinal seal.

The characteristics of the cut and weld performed by the sealing deviceas described herein depend on characteristics of the sealing device andof the packaging material and their interaction. Examples of devicecharacteristics are angles of the operation surfaces relative to eachother, distance between the operation surfaces, material properties ofthe anvil and the sonotrode, frequency and energy of the ultra sound ofthe sonotrode. Examples of packaging material characteristics are typeof material, melting point, thickness, surface roughness. Examples ofinteraction characteristics are gap width in relation to thickness ofpackaging material and pressure used by the anvil and the sonotrodeduring cutting and welding.

The invention will now be illustrated by means of the followingnon-limiting examples wherein an arrangement as described above in FIG.3a-3g were used for portion-packing a filling material and therebyproviding oral pouched snuff products. The frequency used for thesonotrode in the sealing device as described herein may be in the rangeof from 20 kHz to 45 kHz, e.g. 20 kHz, 35 kHz or 40 kHz. The effect maybe in the range of from 100 Watt to 300 Watt. The frequency and theeffect are suitably adapted to the material to be welded, and may thusvary for different packaging materials.

EXAMPLES

In all reference examples and examples, the pouch material was adry-laid (carded) bonded nonwoven comprising viscose staple fibres andabout 35-45% by weight, based on the total dry weight of the nonwoven,of an acrylic polymer that acts as binder in the nonwoven material.

Reference Example 1: 20% and 35% by Weight of Galactitol in HeatMelt-Welded Pouches

Two batches of powder mixture including galactitol (Dulcitol, 99+%,ACROS Organics™, supplied by Fisher Scientific) and microcrystallinecellulose, MCC (Avicel PH-200, supplied by FMC Biopolymer) wereprepared, according to Table 1, using a Kenwood mixer Titanium Major.The mixing time was 12 minutes and the mixing speed was set at minimumspeed. To assure homogenous mixture and avoid dead zones the product inthe bottom of the bowl was manually mixed using a spoon after 3, 7 and10 minutes of mixing.

Dulcitol, 99+%, ACROS Organics™ has according to the supplier's productinformation, a melting point of about 185-190° C. and contains at least99% galactitol.

Avicel PH-200 has, according to the supplier's product information, anominal particle size of 180 μm, a loose bulk density of 0.29-0.36 g/ccand a moisture content of ≤5%.

TABLE 1 Amount of Amount of Percentage of galactitol MCC galactitolBatch (g) (g) (% by weight) Ref 1.1 400 1600 20 Ref 1.2 525 975 35

The two batches of powder mix were packed in pouches using a Merz SB53-2/T packer with pressured air powder dosing of the powder mixtureinto an advancing tubular web of pouch material. Sealing of the tubularweb along the direction of travel as well as transverse to the directionof travel were made by heat melt-welding. The temperature of the weldingparts was about 300° C. and the pouch packing speed was 200 pouches perminute.

The moisture content of the product was below 5% by weight based on thetotal weight of the product.

50 samples of packed pouches were taken every minute and analysed forfrequency of stained/discolored pouches during 10 minutes. The resultsof the analyses are shown in Table 2.

TABLE 2 Batch 1 min 2 min 3 min 4 min 7 min 8 min 9 min 10 min Ref 1.10/50 0/50 0/50 0/50 0/50 0/50 1/50 1/50 Ref 1.2 0/50 0/50 0/50 0/50 0/500/50 0/50 0/50

FIG. 5 shows the welding apparatus for batch ref. 1.1 after about 10minutes. FIG. 6 shows the welding apparatus for batch ref. 1.2 afterabout 10 minutes.

This example illustrates that no significant discoloration occur in themanufacture of oral pouched snuff products by heat melt-welding when thefilling material comprises about 20-35% by weight, based on the dryweight of the filling material, of an ingredient having a meltingtemperature of about 185-190° C.

Reference Example 2: 20%, 35% and 50% by Weight of Maltitol in HeatMelt-Welded Pouches

Three batches of powder mixture including crystalline maltitol(Maltidex™ CH 16385, supplied by Cargill) and microcrystallinecellulose, MCC (Avicel PH-200, supplied by FMC Biopolymer), wereprepared, according to Table 3, using a Dinnissen Pegasus PG-10(VC) labmixer. The mixing time was 2 minutes and the mixing speed was 70 Hz.

Maltidex™ CH 16385 has, according to the supplier's product information,a melting point of about 150° C. and contains at least 99% maltitol.

TABLE 3 Amount of maltitol Amount of MCC Percentage of maltitol Batch(g) (g) (% by weight) Ref 2.1 1000 4000 20 Ref 2.2 1750 3250 35 Ref 2.32500 2500 50

The three batches of powder mixture were packed in pouches using a MerzSB 53-21T packer with pressured air powder dosing of the powder mixtureinto an advancing tubular web of pouch material. Sealing of the tubularweb along the direction of travel as well as transverse to the directionof travel were made by heat melt-welding. The temperature of the weldingparts was about 300° C. and the pouch packing speed was 200 pouches perminute.

The moisture content of the product was below 5% by weight based on thetotal weight of the product.

50 samples of packed pouches were taken every minute and analysed forfrequency of stained/discolored pouches during 10 minutes. The resultsof the analyses are shown in Table 4.

TABLE 4 Batch 1 min 2 min 3 min 4 min 6 min 8 min 9 min 10 min Ref 2.10/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 Ref 2.2 — — — 3/50 2/50 3/502/50 4/50 Ref 2.3 27/50  — 50/50  — — — — —

FIG. 7 shows the welding apparatus for batch ref. 2.1 after about 10minutes. FIG. 8 shows the welding apparatus for batch ref. 2.2 afterabout 10 minutes.

FIG. 10 is a photograph illustrating discolored pouched snuff productsfrom batch 2.3.

This example illustrates that discoloration and/or significantdeposition of filling material on the welding apparatus occur in themanufacture of oral pouched snuff products by heat melt-welding when thefilling material comprises about 20-50% by weight, based on the dryweight of the filling material, of an ingredient having a meltingtemperature of about 150° C.

Reference Example 3: 20% by Weight of Xylitol in Heat Melt-WeldedPouches

One batch of powder mixture including xylitol (Xylisorb® 700, suppliedby Roquette) and microcrystalline cellulose, MCC (Avicel PH-200,supplied by FMC Biopolymer) was prepared, according to Table 5, using aDinnissen Pegasus PG-10(VC) lab mixer. The mixing time was 2 minutes andthe mixing speed was 70 Hz.

Xylisorb® 700, has, according to the supplier's product information, amelting point of about 90-95° C.

TABLE 5 Amount of xylitol Amount of MCC Percentage of xylitol Batch (g)(g) (% by weight) Ref 3.1 1000 4000 20

The batch of powder mix was packed in pouches using a Merz SB 53-2/Tpacker with pressured air powder dosing of the powder mixture into anadvancing tubular web of pouch material. Sealing of the of the tubularweb along the direction of travel as well as transverse to the directionof travel were made by heat melt-welding. The temperature of the weldingparts was about 300° C. and the pouch packing speed was 200 pouches perminute.

The moisture content of the product was below 5% by weight based on thetotal weight of the product.

50 samples of packed pouches were taken every minute and analysed forfrequency of stained/discolored pouches during 10 minutes. The resultsof the analyses are shown in Table 6.

TABLE 6 Batch 1 min 2 min 3 min 4 min 7 min 8 min 9 min 10 min Ref 3.12/50 3/50 1/50 — 6/50 2/50 1/50 1/50

FIG. 9 shows the welding apparatus for batch ref. 3.1 after about 10minutes.

This example illustrates that discoloration occur in the manufacture oforal pouched snuff products by heat melt-welding when the fillingmaterial comprises about 20% by weight, based on the dry weight of thefilling material, of an ingredient having a melting temperature of about90-95° C.

Example 1: 50% by Weight of Maltitol in Ultrasonically Welded Pouches

One batch of powder mixture including maltitol (Maltidex CH 16835,supplied by Cargill) and microcrystalline cellulose, MCC (Avicel PH-200,supplied by FMC Biopolymer) was prepared, according to Table 7, using aDinnissen Pegasus PG-10(VC) lab mixer. The mixing time was 2 minutes andthe mixing speed was 70 Hz.

TABLE 7 Amount of maltitol Amount of MCC Percentage of maltitol Batch(g) (g) (% by weight) 1.1 2500 2500 50

The batch was packed in pouches using a Merz SB 53-2/T packer withpressured air powder dosing of the powder mixture into an advancingtubular web of pouch material. Sealing of the tubular web along thedirection of travel was made by heat-melt welding and sealing transverseto the direction of travel of the tubular web was made by ultrasonicwelding using a Rinco UGH35-750P-230 ultrasonic welding apparatus. Thepouch packing speed was 200 pouches per minute.

Each produced pouched snuff product contained a pouch having twoultrasonically provided transverse (opposite) side seals, each onehaving a seal width of about ≤1 mm and sealing an outermost end portionof the pouch, and a heat melt-welded longitudinal seal.

The moisture content of the product was below 5% by weight based on thetotal weight of the product.

50 samples of packed pouches were taken every minute and analysed forfrequency of stained pouches during 10 minutes. The results of theanalyses are shown in Table 8.

TABLE 8 Batch 1 min 2 min 3 min 4 min 7 min 8 min 9 min 10 min 1.1 0/500/50 0/50 0/50 0/50 0/50 0/50 0/50

As seen from Table 8, no discoloration of the products was identified.This may be compared to the results of Reference Example 2.

Example 2: 100% by Weight of Xylitol in Ultrasonically Welded Pouches

A sample of pure xylitol (Xylisorb 700, supplied by Roquette) was packedin pouches using a Merz SB 53-2/T packer with pressured air powderdosing of the powder mixture into an advancing tubular web of pouchmaterial. Sealing of the tubular web along the direction of travel wasmade by heat-melt welding and sealing transverse to the direction oftravel of the tubular web was made by ultrasonic welding using a RincoUGH35-750P-230 ultrasonic welding apparatus. The pouch packing speed was200 pouches per minute.

Each produced pouched snuff product contained a pouch having twoultrasonically provided transverse (opposite) side seals, each onehaving a seal width of about ≤1 mm and sealing an outermost end portionof the pouch, and a heat melt-welded longitudinal seal.

The moisture content of the product was below 5% by weight based on thetotal weight of the product.

50 samples of packed pouches were taken every minute and analysed forfrequency of stained pouches during 10 minutes. The results of theanalyses are shown in Table 9.

TABLE 9 Batch 1 min 2 min 3 min 4 min 6 min 8 min 9 min 10 min 2.1 0/500/50 0/50 0/50 0/50 0/50 0/50 0/50

As seen from Table 9, no discoloration of the products was identified.This may be compared to the results of Reference Example 3.

1. A method for producing an oral pouched snuff product comprising afilling material and a saliva-permeable pouch enclosing the fillingmaterial, said oral pouched snuff product having a moisture content ofat most 20% by weight based on total weight of the product, saidsaliva-permeable pouch having one or more seals, and said fillingmaterial comprising at least 20% by weight, based on dry weight of thefilling material, of at least one ingredient having a meltingtemperature within the range of from 70° to 155° C., the methodcomprising: supplying and advancing at least one web of packagingmaterial, said at least one web of packaging material advancing in adirection of travel; supplying the filling material to said at least oneadvancing web of packaging material; and welding and cutting said atleast one advancing web of packaging material to which the fillingmaterial has been supplied to provide a plurality of pouches enclosingthe filling material, wherein said welding of said at least oneadvancing web of packaging material to which the filling material hasbeen supplied is provided by ultrasonic welding. 2-27. (canceled) 28.The method according to claim 1, comprising: forming said at least oneadvancing web of packaging material into a tubular web, said formingbeing performed before or after supplying said filling material, therebyproviding an advancing tubular web of packaging material containing thefilling material; and ultrasonically welding and cutting said advancingtubular web of packaging material containing the filling material. 29.The method according to claim 1, wherein said ultrasonic welding andcutting are performed simultaneously thereby providing a cut in a weldedarea.
 30. The method according to claim 1, wherein said at least oneingredient is selected from the group consisting of monosaccharides,disaccharides, sugar alcohols and any combinations thereof.
 31. Themethod according to claim 1, wherein said at least one ingredient is asugar alcohol.
 32. The method according to claim 1, wherein said atleast one ingredient is a sugar alcohol selected from the groupconsisting of maltitol, sorbitol, xylitol and any combinations thereof.33. The method according to claim 1, wherein the filling materialcomprises at least 35% by weight, based on dry weight of the fillingmaterial, of maltitol.
 34. The method according to claim 1, wherein thepackaging material is nonwoven comprising staple fibres of regeneratedcellulose and a binder.
 35. The method according to claim 1, wherein theoral pouched snuff product is selected from the group consisting of oralpouched smokeless tobacco products, oral pouched nicotine-containingtobacco-free snuff products and oral pouched nicotine-free tobacco-freesnuff products.
 36. An oral pouched snuff product comprising a fillingmaterial and a saliva-permeable pouch of a packaging material enclosingthe filling material, said oral pouched snuff product having a moisturecontent of at most 20% by weight based on total weight of the product,said saliva-permeable pouch comprising at least one elongated sealsealing the packaging material and having a seal length extending alonga first direction and a seal width extending along a second directiontransverse to said first direction, and said filling material comprisingat least 20% by weight, based on dry weight of the filling material, ofat least one ingredient having a melting temperature within the range offrom 70° C. to 155° C., wherein: said seal width being equal to or lessthan 2 mm, and said at least one elongated seal being an ultrasonicallyprovided weld formed by simultaneous ultrasonic welding and cutting ofthe packaging material such that a cut is provided in a welded area,thereby at least one outermost end portion of the pouch being sealed bythe at least one elongated seal.
 37. The oral pouched snuff productaccording to claim 36, wherein the oral pouched snuff product has alongitudinal direction and a transverse direction perpendicular to thelongitudinal direction, the saliva-permeable pouch comprises a firstelongated seal and a second elongated seal, each of said first andsecond elongated seals has a seal length extending along the transversedirection of the product and a seal width extending along thelongitudinal direction of the product, said seal width being equal to orless than 2 mm, and each of said first and second elongated seals issealing an outermost end portion of the saliva-permeable pouch.
 38. Theoral pouched snuff product according to claim 37, wherein thesaliva-permeable pouch comprises an additional elongated seal having aseal length extending along the longitudinal direction of the productand a seal width extending along the transverse direction of theproduct, said seal width being equal to or less than 2 mm.
 39. The oralpouched snuff product according to claim 36, wherein said oral pouchedsnuff product has a moisture content of at most 5% by weight based ontotal weight of the oral pouched snuff product.
 40. The oral pouchedsnuff product according to claim 36, wherein said at least oneingredient is selected from the group consisting of monosaccharides,disaccharides, sugar alcohols and any combinations thereof.
 41. The oralpouched snuff product according to claim 36, wherein said at least oneingredient is a sugar alcohol.
 42. The oral pouched snuff productaccording to claim 36, wherein said at least one ingredient is a sugaralcohol selected from the group consisting of maltitol, mannitol,sorbitol, xylitol and any combinations thereof.
 43. The oral pouchedsnuff product according to claim 36, wherein the filling materialcomprises at least 35% by weight, based on dry weight of the fillingmaterial, of maltitol.
 44. The oral pouched snuff product according toclaim 36, wherein the saliva-permeable pouch is made of nonwovencomprising staple fibers of regenerated cellulose and a binder.
 45. Theoral pouched snuff product according to claim 36, wherein the oralpouched snuff product is selected from the group consisting of oralpouched smokeless tobacco products, oral pouched nicotine-containingtobacco-free snuff products and oral pouched nicotine-free tobacco-freesnuff products.